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                        <h1 class="display-4 text-primary-gradient mb-3">🧪 实验园地</h1>
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                            动手实践出真知，通过有趣的科学实验探索水的奥秘！
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                                        <h4 class="text-warning mb-1">实验安全须知</h4>
                                        <p class="text-muted mb-0">安全第一，快乐实验！请仔细阅读以下安全规则：</p>
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                                            <i class="bi bi-x-circle me-2"></i>禁止行为：
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                                            <li><i class="bi bi-dash-circle text-danger me-2"></i>未经老师允许开始实验</li>
                                            <li><i class="bi bi-dash-circle text-danger me-2"></i>品尝或直接接触化学试剂</li>
                                            <li><i class="bi bi-dash-circle text-danger me-2"></i>在实验室内吃喝、打闹</li>
                                            <li><i class="bi bi-dash-circle text-danger me-2"></i>随意混合不同试剂</li>
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                                            <i class="bi bi-check-circle me-2"></i>必须遵守：
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                                            <li><i class="bi bi-check-circle text-success me-2"></i>穿戴好实验服和护目镜</li>
                                            <li><i class="bi bi-check-circle text-success me-2"></i>严格按照步骤操作</li>
                                            <li><i class="bi bi-check-circle text-success me-2"></i>有问题立即询问老师</li>
                                            <li><i class="bi bi-check-circle text-success me-2"></i>实验后及时洗手</li>
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                        <h2 class="text-center mb-5">🧪 精选实验项目</h2>
                        
                        <!-- 实验1：水质检测对比 -->
                        <div class="experiment-card" data-aos="fade-up" data-aos-delay="250">
                            <div class="row g-0">
                                <div class="col-md-4">
                                    <img src="https://trae-api-us.mchost.guru/api/ide/v1/text_to_image?prompt=Students%20conducting%20water%20quality%20test%20with%20test%20tubes%2C%20colorful%20reagents%2C%20and%20comparison%20charts%2C%20safe%20laboratory%20setting%2C%20educational%20environment&image_size=landscape_4_3" 
                                         class="img-fluid rounded-start h-100" alt="水质检测实验" style="object-fit: cover;">
                                </div>
                                <div class="col-md-8">
                                    <div class="card-body p-4">
                                        <div class="d-flex align-items-center mb-3">
                                            <div class="bg-primary text-white rounded-circle d-flex align-items-center justify-content-center me-3" style="width: 50px; height: 50px;">
                                                <strong>1</strong>
                                            </div>
                                            <div>
                                                <h4 class="text-primary mb-1">水质检测对比实验</h4>
                                                <span class="badge bg-info">观察对比</span>
                                                <span class="badge bg-warning">简单安全</span>
                                            </div>
                                        </div>
                                        
                                        <p class="mb-4">
                                            通过对比不同水样的外观、气味、pH值等，了解水质检测的基本方法，观察污水处理前后的神奇变化！
                                        </p>
                                        
                                        <div class="row">
                                            <div class="col-sm-6">
                                                <h6><i class="bi bi-list-check me-2"></i>实验步骤：</h6>
                                                <ol class="small">
                                                    <li>准备4个透明塑料瓶，分别装入：</li>
                                                    <ul>
                                                        <li>自来水（干净水样）</li>
                                                        <li>河水/湖水（自然水样）</li>
                                                        <li>模拟污水（加墨水）</li>
                                                        <li>处理后的中水</li>
                                                    </ul>
                                                    <li>观察并记录各水样的颜色、透明度</li>
                                                    <li>用pH试纸测试酸碱度</li>
                                                    <li>对比气味差异</li>
                                                    <li>总结水质好坏的标准</li>
                                                </ol>
                                            </div>
                                            <div class="col-sm-6">
                                                <div class="material-list">
                                                    <h6><i class="bi bi-box me-2"></i>所需材料：</h6>
                                                    <ul>
                                                        <li>透明塑料瓶 4个</li>
                                                        <li>pH试纸 1包</li>
                                                        <li>记号笔 1支</li>
                                                        <li>记录表 1份</li>
                                                        <li>滴管 若干</li>
                                                    </ul>
                                                </div>
                                                <div class="alert alert-info mt-3">
                                                    <i class="bi bi-lightbulb me-2"></i>
                                                    <strong>学习要点：</strong>了解水质评价的基本指标，培养观察和记录能力。
                                                </div>
                                            </div>
                                        </div>
                                    </div>
                                </div>
                            </div>
                        </div>

                        <!-- 实验2：过滤效果对比 -->
                        <div class="experiment-card" data-aos="fade-up" data-aos-delay="300">
                            <div class="row g-0">
                                <div class="col-md-8">
                                    <div class="card-body p-4">
                                        <div class="d-flex align-items-center mb-3">
                                            <div class="bg-success text-white rounded-circle d-flex align-items-center justify-content-center me-3" style="width: 50px; height: 50px;">
                                                <strong>2</strong>
                                            </div>
                                            <div>
                                                <h4 class="text-success mb-1">自制过滤器效果对比</h4>
                                                <span class="badge bg-primary">动手制作</span>
                                                <span class="badge bg-success">效果明显</span>
                                            </div>
                                        </div>
                                        
                                        <p class="mb-4">
                                            制作简易过滤器，体验污水净化的基本原理，了解不同过滤材料的效果差异。
                                        </p>
                                        
                                        <div class="row">
                                            <div class="col-sm-6">
                                                <h6><i class="bi bi-tools me-2"></i>制作步骤：</h6>
                                                <ol class="small">
                                                    <li>准备3个相同的塑料瓶，剪去底部</li>
                                                    <li>按顺序装入不同过滤材料：</li>
                                                    <ul>
                                                        <li><strong>过滤器A：</strong>砂子→活性炭→纱布</li>
                                                        <li><strong>过滤器B：</strong>砂子→小石子→纱布</li>
                                                        <li><strong>过滤器C：</strong>活性炭→棉花→纱布</li>
                                                    </ul>
                                                    <li>倒入相同量的模拟污水</li>
                                                    <li>观察并记录过滤效果</li>
                                                    <li>比较哪种组合效果最好</li>
                                                </ol>
                                            </div>
                                            <div class="col-sm-6">
                                                <div class="material-list">
                                                    <h6><i class="bi bi-box me-2"></i>所需材料：</h6>
                                                    <ul>
                                                        <li>塑料瓶 3个</li>
                                                        <li>细砂子 适量</li>
                                                        <li>小石子 适量</li>
                                                        <li>活性炭 适量</li>
                                                        <li>棉花 若干</li>
                                                        <li>纱布 若干</li>
                                                        <li>橡皮筋 若干</li>
                                                    </ul>
                                                </div>
                                                <div class="alert alert-warning mt-3">
                                                    <i class="bi bi-exclamation-triangle me-2"></i>
                                                    <strong>安全提醒：</strong>使用剪刀时请小心，最好在老师指导下操作。
                                                </div>
                                            </div>
                                        </div>
                                    </div>
                                </div>
                                <div class="col-md-4">
                                    <img src="https://trae-api-us.mchost.guru/api/ide/v1/text_to_image?prompt=Students%20making%20water%20filters%20with%20plastic%20bottles%2C%20sand%2C%20gravel%2C%20and%20charcoal%2C%20safe%20classroom%20setting%2C%20educational%20activity&image_size=landscape_4_3" 
                                         class="img-fluid rounded-end h-100" alt="自制过滤器实验" style="object-fit: cover;">
                                </div>
                            </div>
                        </div>

                        <!-- 实验3：显微镜观察 -->
                        <div class="experiment-card" data-aos="fade-up" data-aos-delay="350">
                            <div class="row g-0">
                                <div class="col-md-4">
                                    <img src="https://trae-api-us.mchost.guru/api/ide/v1/text_to_image?prompt=Students%20using%20microscopes%20to%20observe%20water%20samples%2C%20showing%20microorganisms%2C%20safe%20laboratory%20setting%2C%20educational%20environment&image_size=landscape_4_3" 
                                         class="img-fluid rounded-start h-100" alt="显微镜观察实验" style="object-fit: cover;">
                                </div>
                                <div class="col-md-8">
                                    <div class="card-body p-4">
                                        <div class="d-flex align-items-center mb-3">
                                            <div class="bg-info text-white rounded-circle d-flex align-items-center justify-content-center me-3" style="width: 50px; height: 50px;">
                                                <strong>3</strong>
                                            </div>
                                            <div>
                                                <h4 class="text-info mb-1">显微镜下的微观世界</h4>
                                                <span class="badge bg-primary">科学观察</span>
                                                <span class="badge bg-info">神奇发现</span>
                                            </div>
                                        </div>
                                        
                                        <p class="mb-4">
                                            使用显微镜观察不同水样中的微生物，了解水中微观生命的多样性，感受微生物在水处理中的重要作用。
                                        </p>
                                        
                                        <div class="row">
                                            <div class="col-sm-6">
                                                <h6><i class="bi bi-search me-2"></i>观察步骤：</h6>
                                                <ol class="small">
                                                    <li>准备不同来源的水样：</li>
                                                    <ul>
                                                        <li>池塘水</li>
                                                        <li>处理前的污水</li>
                                                        <li>处理后的中水</li>
                                                        <li>自来水</li>
                                                    </ul>
                                                    <li>制作临时装片</li>
                                                    <li>调节显微镜焦距</li>
                                                    <li>观察并绘制看到的微生物</li>
                                                    <li>比较不同水样的生物差异</li>
                                                    <li>讨论微生物的作用</li>
                                                </ol>
                                            </div>
                                            <div class="col-sm-6">
                                                <div class="material-list">
                                                    <h6><i class="bi bi-box me-2"></i>所需材料：</h6>
                                                    <ul>
                                                        <li>显微镜 若干台</li>
                                                        <li>载玻片 若干</li>
                                                        <li>盖玻片 若干</li>
                                                        <li>滴管 若干</li>
                                                        <li>记录纸 若干</li>
                                                        <li>彩色铅笔 若干</li>
                                                    </ul>
                                                </div>
                                                <div class="alert alert-success mt-3">
                                                    <i class="bi bi-star me-2"></i>
                                                    <strong>科学发现：</strong>你可能会看到草履虫、轮虫、藻类等各种有趣的微生物！
                                                </div>
                                            </div>
                                        </div>
                                    </div>
                                </div>
                            </div>
                        </div>

                        <!-- 实验4：pH值测试 -->
                        <div class="experiment-card" data-aos="fade-up" data-aos-delay="400">
                            <div class="row g-0">
                                <div class="col-md-8">
                                    <div class="card-body p-4">
                                        <div class="d-flex align-items-center mb-3">
                                            <div class="bg-warning text-dark rounded-circle d-flex align-items-center justify-content-center me-3" style="width: 50px; height: 50px;">
                                                <strong>4</strong>
                                            </div>
                                            <div>
                                                <h4 class="text-warning mb-1">水的酸碱度测试</h4>
                                                <span class="badge bg-success">化学实验</span>
                                                <span class="badge bg-warning">颜色变化</span>
                                            </div>
                                        </div>
                                        
                                        <p class="mb-4">
                                            通过pH试纸和天然指示剂，测试不同水样的酸碱度，了解pH值对水质的影响。
                                        </p>
                                        
                                        <div class="row">
                                            <div class="col-sm-6">
                                                <h6><i class="bi bi-vial me-2"></i>实验步骤：</h6>
                                                <ol class="small">
                                                    <li>准备不同水样和自制指示剂：</li>
                                                    <ul>
                                                        <li>自来水、雨水、河水</li>
                                                        <li>醋水（酸性）</li>
                                                        <li>苏打水（碱性）</li>
                                                        <li>紫甘蓝汁（天然指示剂）</li>
                                                    </ul>
                                                    <li>用pH试纸测试各水样</li>
                                                    <li>滴加紫甘蓝汁观察颜色变化</li>
                                                    <li>制作pH值对照表</li>
                                                    <li>分析测试结果的意义</li>
                                                </ol>
                                            </div>
                                            <div class="col-sm-6">
                                                <div class="material-list">
                                                    <h6><i class="bi bi-box me-2"></i>所需材料：</h6>
                                                    <ul>
                                                        <li>pH试纸 若干</li>
                                                        <li>紫甘蓝 1个</li>
                                                        <li>透明杯子 6个</li>
                                                        <li>醋 适量</li>
                                                        <li>小苏打 适量</li>
                                                        <li>滴管 若干</li>
                                                        <li>记录表 1份</li>
                                                    </ul>
                                                </div>
                                                <div class="alert alert-info mt-3">
                                                    <i class="bi bi-palette me-2"></i>
                                                    <strong>颜色密码：</strong>紫甘蓝汁遇酸变红，遇碱变绿，中性保持紫色！
                                                </div>
                                            </div>
                                        </div>
                                    </div>
                                </div>
                                <div class="col-md-4">
                                    <img src="https://trae-api-us.mchost.guru/api/ide/v1/text_to_image?prompt=Students%20testing%20pH%20levels%20with%20test%20strips%20and%20colorful%20solutions%2C%20safe%20classroom%20experiment%2C%20educational%20setting&image_size=landscape_4_3" 
                                         class="img-fluid rounded-end h-100" alt="pH值测试实验" style="object-fit: cover;">
                                </div>
                            </div>
                        </div>

                        <!-- 实验5：水的表面张力 -->
                        <div class="experiment-card" data-aos="fade-up" data-aos-delay="450">
                            <div class="row g-0">
                                <div class="col-md-4">
                                    <img src="https://trae-api-us.mchost.guru/api/ide/v1/text_to_image?prompt=Water%20surface%20tension%20experiment%20with%20paperclips%20floating%20on%20water%2C%20students%20observing%2C%20safe%20and%20simple%20setup&image_size=landscape_4_3" 
                                         class="img-fluid rounded-start h-100" alt="表面张力实验" style="object-fit: cover;">
                                </div>
                                <div class="col-md-8">
                                    <div class="card-body p-4">
                                        <div class="d-flex align-items-center mb-3">
                                            <div class="bg-danger text-white rounded-circle d-flex align-items-center justify-content-center me-3" style="width: 50px; height: 50px;">
                                                <strong>5</strong>
                                            </div>
                                            <div>
                                                <h4 class="text-danger mb-1">神奇的表面张力</h4>
                                                <span class="badge bg-primary">物理现象</span>
                                                <span class="badge bg-danger">神奇有趣</span>
                                            </div>
                                        </div>
                                        
                                        <p class="mb-4">
                                            通过简单有趣的小实验，观察水的表面张力现象，了解这个神奇的物理特性。
                                        </p>
                                        
                                        <div class="row">
                                            <div class="col-sm-6">
                                                <h6><i class="bi bi-magic me-2"></i>实验内容：</h6>
                                                <ol class="small">
                                                    <li><strong>实验A - 回形针漂浮：</strong></li>
                                                    <ul>
                                                        <li>小心地将回形针放在水面上</li>
                                                        <li>观察回形针是否会下沉</li>
                                                        <li>尝试加入洗洁精观察变化</li>
                                                    </ul>
                                                    <li><strong>实验B - 水滴计数：</strong></li>
                                                    <ul>
                                                        <li>用滴管在硬币上滴水</li>
                                                        <li>数清楚能形成多少滴水</li>
                                                        <li>观察水滴的形状变化</li>
                                                    </ul>
                                                    <li>解释表面张力的原理</li>
                                                </ol>
                                            </div>
                                            <div class="col-sm-6">
                                                <div class="material-list">
                                                    <h6><i class="bi bi-box me-2"></i>所需材料：</h6>
                                                    <ul>
                                                        <li>回形针 若干</li>
                                                        <li>硬币 若干</li>
                                                        <li>滴管 若干</li>
                                                        <li>洗洁精 少量</li>
                                                        <li>清水 适量</li>
                                                        <li>小纸片 若干</li>
                                                    </ul>
                                                </div>
                                                <div class="alert alert-success mt-3">
                                                    <i class="bi bi-lightbulb me-2"></i>
                                                    <strong>科学原理：</strong>水分子之间的相互吸引力形成了"看不见的薄膜"！
                                                </div>
                                            </div>
                                        </div>
                                    </div>
                                </div>
                            </div>
                        </div>
                    </div>
                </div>
            </div>
        </section>

        <!-- 📊 实验记录表 -->
        <section class="py-5 bg-light">
            <div class="container">
                <div class="row">
                    <div class="col-lg-10 mx-auto" data-aos="fade-up" data-aos-delay="500">
                        <h2 class="text-center mb-5">📊 实验记录表</h2>
                        
                        <div class="card border-0 shadow-custom">
                            <div class="card-body p-4">
                                <div class="table-responsive">
                                    <table class="table table-hover">
                                        <thead class="table-light">
                                            <tr>
                                                <th>实验名称</th>
                                                <th>实验日期</th>
                                                <th>实验结果</th>
                                                <th>我的发现</th>
                                                <th>老师评价</th>
                                            </tr>
                                        </thead>
                                        <tbody>
                                            <tr>
                                                <td><strong>水质检测对比</strong></td>
                                                <td>________</td>
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